Wehrli Custom Fabrication WCF100417-IBB High Flow Turbo Intake Horn 2011-2016 LML Duramax Illusion Blueberry

The Wehrli Custom Fabrication WCF100417-IBB High Flow Turbo Intake Horn is engineered to replace the restrictive OEM plastic inlet on 2011-2016 LML Duramax engines, delivering improved airflow, enhanced throttle response, and aggressive turbo sound. This precision-machined intake horn features the largest inlet on the market at 4.8 inches, providing a significant performance upgrade for your Chevrolet Silverado or GMC Sierra diesel truck.

Key Performance Features:

• 4.8-inch inlet diameter - largest intake horn available for LML applications
• 5.6% improvement in airflow over stock configuration
• CNC machined cast aluminum construction for superior durability
• Custom Illusion Blueberry powder coat finish
• Includes integrated PCV port for proper ventilation system connection
• Eliminates restrictive resonator for cleaner engine bay appearance and enhanced turbo sound

Complete Installation Hardware Included:

• Silicone reducer boot for secure connection
• Stainless steel T-bolt clamps
• O-ring seal and new EGR gaskets
• All necessary mounting hardware

This direct-fit upgrade is designed to work with intakes that use a boot and clamp connection system. The horn pairs perfectly with WCFab Stage 1 LML Intake Kits and High Flow Bundle Kits for maximum performance gains. Proudly manufactured in the USA with precision CNC machining for perfect fitment and long-lasting performance.

Important Compatibility Notes:

• Not compatible with OEM or aftermarket intakes (such as K&N) that use a built-in rubber connection molded to the intake pipe
• Requires intake pipe that accepts a 4-inch boot and clamp connection
• Not compatible with aftermarket LML Y-bridges that relocate the manifold inlet from factory driver-side position
• 2011 model year trucks require PCV Regulating Valve update to 2012-2016 specification for proper fitment
• Cannot ship to California